Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc13f857b4467483…

MALICIOUS

PDF

43.1 KB Created: 2020-08-11 07:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c77000359a55d597989e72239d3a7b4 SHA-1: 8a578329fd14a5340c3de7cb915426e0c861850b SHA-256: cc13f857b44674836ad1e318ba367a2042b97b6dfb86ba79e56a03b9640ad1d6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=inductive+and+deductive+reasoning+examples+in+everyday+life+pdf'. This indicates the document is designed to lure users to malicious infrastructure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=inductive+and+deductive+reasoning+examples+in+everyday+life+pdf In PDF document text
    • http://files.natalieasport.com/uploads/1/3/2/6/132695575/podukurupo.pdfIn PDF document text
    • http://files.southwestpassages.org/uploads/1/3/1/0/131070918/dd05df1a47fd.pdfIn PDF document text
    • http://files.vapeboss.shop/uploads/1/3/0/8/130814078/559e8ddf5.pdfIn PDF document text
    • http://files.amandaleightonphoto.com/uploads/1/3/2/6/132681617/vavupodut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/mathematical_analysis_business_and_economic_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0684/3288/files/56547350479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/pizenugabeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2729/0518/files/34458040787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0432/0154/files/transition_to_advanced_mathematics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/formasi_cpns_belitung_timur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3257/files/77594701499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/bolamuru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/74463642220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/laduvigajilamemesuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6512/2720/files/piruzexewofajidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/ralaguwijefowofugavutu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000690b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690B 5640 bytes
SHA-256: ad4b97fdf429abbbf03bfc1b65fce3f6841431d1c89905eb4ff91f1889126e8b
font_01_sfnt_off00007c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C40 10160 bytes
SHA-256: 0ef3a315a44c1a2e3d513b15a155ec0205f48754ed452cfd9a81a36f8a0e0093

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